How long is a piece of string  ? I don't think you will get many answers, and none at the '20 questions' survey level of detail you are requesting. You may do better asking on check a trade.

Do folk even do a fixed price by the no of 'points'? I think there are too many variables, travel time, parking costs, repeat business with the same customer, what sort of sockets - to match the existing chrome fronted ones or the cheapest BG or screwfix, A CU full of chint breakers and one RCD or hagar RCBOs, single or three phase supplies etc?

At best you might get a labour rate per day, and an estimate of how long a given job may take after a site visit,  but I'd expect most businesses to keep the detail of that sort of calculation to themselves.

I would.

Mike.

Im asking for labour only. I got a great response for day rates and first hour rates on the UK electricians Facebook group a while back but they didn't allow this post. Why would people be shady with their rates. Once you're confident in them it's easy to say roughly and helps get a feel for the average. 

Depends on your overheads for a start.  I am a sole trader working from home. I can undercut anyone if I want and make a decent living. 

A company down the road might have office staff, storage units etc that just eat profit before you start.

Gary

Do folk even do a fixed price by the no of 'points'?

The "electric board" did when I were a (young) lad and we had the house re-wired. £x per socket, £x per light etc. If you did enough I guess you could average it out to something sensible. I guess it made the sales process simpler. I recall the electricians on site complaining that this policy translated down to so many minutes per thingy - e.g. 20 min per joint box. It didn't matter if it was a simple 4-terminal one for a single light, or a big "universal joint box" that pulled together the cables for the entire downstairs lighting circuit (which they we doing at the time), it was still reckoned to be 20 mins. If they took longer overall on a job than had been estimated they had to explain why...

In theory it should work out OK if you can average it out over a large number of jobs (i.e. use the easy jobs to subsidise the tricker ones), but you might need deep pockets to keep going if you get a few tricky jobs in a row. The market tends to work against that way of working too - if you say £x fixed and someone else works it out more accurately according to the actual conditions, they'll undercut you on the easy jobs, and you'll be left with just the nastier ones (for which you've probably underpriced, on average).

Time taken also varies with experience - the 1st time you see a certain problem it'll likely take you ages to sort it out, by the 10th time you'll know immediately what'll work and have the right bits and bobs in your toolkit to fix it easily.

   - Andy.

My preference as a customer is to pay a day rate. Clearly, one can compare quotes with the greatest of ease. I am happy to pay list price for the hardware, and good luck to the tradesman for negotiating his or her discount.

If all that work is in one domestic property I would start with a site survey chargeable or free or Hybrid.  What I mean by Hybrid is charge your survey time lets say £400 for the day and if the customer does not want to proceed then that's all they pay.  If the customer accept your quote for work then that £400 can come of the quote price.  (other day rates are available). This will help with stopping people wasting your time or just using your quote to get someone else to do the job cheaper.

During survey you need to look at things like the age of house and if they use floor board or chipbord/plywood floors.  Labour time varies depending on flooring.  Eg some chipboard is glued and screwed which most of the time means it gets destroyed when you lift it up is large segments.  Also worth noting that there is a heigher risk of service penetration if you have to cut blind into a floor.  Loft and wall insulation are some other points to consider.  Some PIR insulation will cause plasticiser migration on PVC/PVC 2 core % CPC/Earth

I would also then advocate doing an EICR of the property before work commences as they may be some Gremlins in the installation.  EG. shared Neutrals which are not an issue on a CU from 40 years ago but it will upset a new RCBO board if the lights are separated by floors/zones/compartments.

Other caveats to consider is making good, again this can be labour intensive.  Eg PVA/SBR chase, Bond chase, 1 or 2 coats of filler, 2 coats of paint

With the above being said here are the key questions

How many hours a day do you work?

How many days/hours do you think the work will take?

Location in the UK and the travel time to site?

What is your profitable day rate?  Eg some people work for £200 per day or price match however what they need to do is work out there operation cost per year and then divide by 12 and then they can work out how many days a month they want to work and what profit % they want.  This then gives an accurate day rate.

Eg Sole trader could make profit on a day rate of £150 to £500.  However a small company with 10 employee may need a day rate of a minimum of £700 thus paying for admin staff and an office.